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一、彝良地震基本情况9月7日11时19分,云南省昭通市彝良县、贵州省毕节地区威宁彝族回族苗族自治县(北纬27.5度,东经104.0度)交界发生5.7级地震,震源深度14公里。12时16分,昭通市彝良县又发生5.6级地震,震源深度10公里。截止8日早上8时,云南彝良地震灾区发生余震161次,最大余震4.4级。两次地震极震区均达到8度以上,受灾面积超过3500平方公里。截至9月9日上午11时,云南彝良县地震遇难
I. Basic Conditions of the Yeliang Earthquake At 9.19 on September 7, the 5.7 magnitude earthquake hit Yilan County, Zhaotong City, Yunnan Province, and the Hui ethnic minority and Miao Autonomous County of Weining, Guizhou (27.5 degrees north latitude and 104.0 degrees east longitude) in Bijie Prefecture of Guizhou Province, Depth of 14 km. At 12:16, another 5.6 magnitude earthquake struck Yiliang County, Zhaotong City, with a depth of 10 kilometers. As of 8:00 on the 8th, aftershocks in Yunnan Yi Liang earthquake 161 times, the largest aftershock 4.4. Both earthquakes have reached more than 8 degrees, the affected area of more than 3500 square kilometers. As of 11 o’clock on September 9, Yili County, Yunnan earthquake killed